@stream-io/stream-chat-css/dist/scss/Gallery.scss

$image-size: 150px;

.str-chat__gallery {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  overflow: hidden;

  &-image {
    /* flex: 1; x */
    width: $image-size;
    height: $image-size;
    background: var(--white);
    margin-bottom: 1px;
    margin-right: 1px;
    border: none;
    padding: 0;
    display: flex;

    &:hover {
      cursor: -moz-zoom-in;
      cursor: -webkit-zoom-in;
      cursor: zoom-in;
    }

    img {
      width: inherit;
      // CDN resize requires max-height/height and max-width to be set on this element
      height: inherit;
      max-width: $image-size;
      object-fit: cover;
    }
  }

  &--square {
    max-width: 301px; // 300px + 1px margin between images
  }

  &--square &-image:nth-child(even) {
    margin-right: 0;
  }
}

.livestream.str-chat,
.messaging.str-chat,
.commerce.str-chat,
.team.str-chat {
  .str-chat {
    &__gallery {
      margin: 4px 0;

      &-image {
        width: $image-size;
        height: $image-size;
      }

      &-placeholder {
        position: relative;
        width: $image-size;
        // CDN resize requires max-height/height and max-width to be set on this element
        max-width: $image-size;
        height: $image-size;
        color: var(--white);
        display: flex;
        align-items: center;
        justify-content: center;
        background-size: cover;
        background-position: top left;
        background-repeat: no-repeat;
        cursor: -moz-zoom-in;
        cursor: -webkit-zoom-in;
        cursor: pointer;
        border: none;

        p {
          position: relative;
          z-index: 1;
          font-size: 16px;
        }

        &::after {
          content: '';
          position: absolute;
          top: 0;
          left: 0;
          width: 100%;
          height: 100%;
          background-color: var(--overlay-dark);
          z-index: 0;
        }
      }
    }
  }
}

.commerce.str-chat {
  .str-chat__gallery {
    width: calc(100% - 30px);
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-auto-rows: 100px;

    &-image,
    &-placeholder {
      width: 100%;
      height: 100%;
    }
  }

  .str-chat__message-commerce {
    .str-chat__gallery {
      border-radius: var(--border-radius) var(--border-radius) var(--border-radius) 2px;
    }

    &--right {
      .str-chat__gallery {
        border-radius: var(--border-radius) var(--border-radius) 2px var(--border-radius);
      }
    }
  }
}